Company lists · Data refreshed September 2026

Top 22 Data breach protection companies based in New York, United States

RevenueBase identified 97 data breach protection companies headquartered in New York, United States as of September 2026 and tracks 1,284 professional contacts across them, including 351 with verified work emails. New York is the largest hub.

This list covers data breach protection companies headquartered in New York, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review
97Companies
1,284Contacts tracked
351Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 22 largest data breach protection companies based in New York, United States

Ranked by team size
Top 22 of 97 data breach protection companies based in New York, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to data breach protection companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceNew York, NY, United StatesHQ checked Sep 19, 2026201-500200 contacts →

Partial evidence

“Agio is a hybrid cybersecurity and managed IT organization that combines predictive intelligence with human brilliance to empower clients with next-generation cyber protection and…”

Source: RevenueBase Database · checked Sep 19, 2026
2Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 2026201-500163 contacts →

Indirect evidence

“Harbor IT helps organizations secure, operate, and scale through integrated IT, cybersecurity, AI, and cloud services.”

Source: RevenueBase Database · checked Sep 19, 2026
3Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 202651-20076 contacts →

Indirect evidence

“NopalCyber makes cybersecurity manageable, affordable, reliable, and powerful for companies that need to be resilient and compliant.”

Source: RevenueBase Database · checked Sep 19, 2026
4Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 2026n/a66 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
5Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 202651-20058 contacts →

Indirect evidence

“Altourage is a New York City-based managed IT and cybersecurity provider built for organizations that operate in high-stakes, fast-moving environments.”

Source: RevenueBase Database · checked Sep 19, 2026
6Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 202651-20055 contacts →

Indirect evidence

“Port53 Technologies is The Global Leader in Cisco-Based Managed Security Operations, helping organizations modernize and secure their digital environments through advanced…”

Source: RevenueBase Database · checked Sep 19, 2026
7Partial evidenceNew York, NY, United StatesHQ checked Sep 19, 202611-5038 contacts →

Partial evidence

“Founded in 2011, Proven Data has consistently evolved to meet the growing needs of our clients.”

Source: RevenueBase Database · checked Sep 19, 2026
8Indirect evidenceNew York, United StatesHQ checked Sep 19, 202651-20028 contacts →

Indirect evidence

“CipherTechs is now part of CyberMaxx, a tech-enabled cybersecurity service provider.”

Source: RevenueBase Database · checked Sep 19, 2026
9Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 2026201-50019 contacts →

Indirect evidence

“ACA Aponix, a division of ACA Group, provides cybersecurity and technology risk assessments, vendor and M&A diligence services, network testing, and advisory services.”

Source: RevenueBase Database · checked Sep 19, 2026
10Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 202651-20017 contacts →

Indirect evidence

“Cohere offers managed security and IT infrastructure services all under one roof.”

Source: RevenueBase Database · checked Sep 19, 2026
11Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 202611-5016 contacts →

Indirect evidence

“LIFARS, a SecurityScorecard Company is a global leader in Incident Response, Digital Forensics, Ransomware Mitigation, and Cyber Resiliency services.”

Source: RevenueBase Database · checked Sep 19, 2026
12Indirect evidenceNew York, United StatesHQ checked Sep 19, 202611-5012 contacts →

Indirect evidence

“We’re the nemesis of evil hackers attempting to take control of your system so they can extort money.”

Source: RevenueBase Database · checked Sep 19, 2026
13Partial evidenceNew York, NY, United StatesHQ checked Sep 19, 202611-5012 contacts →

Partial evidence

“At Silent Breach, we think like a hacker and defend like a pro.”

Source: RevenueBase Database · checked Sep 19, 2026
14Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 20261-109 contacts →

Indirect evidence

“Our primary business is the digital security of your assets.”

Source: RevenueBase Database · checked Sep 19, 2026
15Partial evidenceNew York, NY, United StatesHQ checked Sep 19, 202611-509 contacts →

Partial evidence

“Resonance Security offers full spectrum cybersecurity aggregation software for institutions and individuals that makes protecting against any cybersecurity threat effortless no…”

Source: RevenueBase Database · checked Sep 19, 2026
16Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 202611-508 contacts →

Indirect evidence

“PROTELI is a trusted IT and cybersecurity partner that delivers proactive, managed IT solutions to small and mid-sized businesses and startups in NYC and beyond.”

Source: RevenueBase Database · checked Sep 19, 2026
17Indirect evidenceNew York, United StatesHQ checked Sep 19, 202611-508 contacts →

Indirect evidence

“Sayfer, where people and technology meet to overcome web3 and blockchain challenges.”

Source: RevenueBase Database · checked Sep 19, 2026
18Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 202651-2008 contacts →

Indirect evidence

“HolistiCyber’s mission is to assist corporations in defending themselves from the new phase of evolution in Cyber threats - not only in volume, but in the level of sophistication.”

Source: RevenueBase Database · checked Sep 19, 2026
19Indirect evidenceNew York, United StatesHQ checked Sep 19, 20261-106 contacts →

Indirect evidence

“Your technology should scale with you.”

Source: RevenueBase Database · checked Sep 19, 2026
20Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 20261-105 contacts →

Indirect evidence

“Kopidion consists of highly qualified cyber operations and information security professionals.”

Source: RevenueBase Database · checked Sep 19, 2026
21Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 202611-504 contacts →

Indirect evidence

“ParanoidLab is a Cyber Threat Intelligence service designed for MSSPs, SOCs, and IT Security providers focused on expanding their security services and boosting revenue.”

Source: RevenueBase Database · checked Sep 19, 2026
22Indirect evidenceNew York, United StatesHQ checked Sep 19, 202611-504 contacts →

Indirect evidence

“Velstadt is a cybersecurity provider focused on delivering both offensive and defensive security services.”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 22 of 97 data breach protection companies based in New York, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 351 reachable decision-makers.

Free signup · no credit card

View the full list →

Data breach protection companies based in New York, United States at a glance

As of Sep 19, 2026
27.3%Verified-email coverage
13.2Average contacts per company
11-50Median size (employees)
100.0%Largest-city concentration · New York
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
45
11-50
32
51-200
13
201-500
5
501-1,000
1
1,001-5,000
1

Email recency for this list is measured across the whole United States list rather than for New York, so it is reported there. Company counts and contact totals on this page are exact for New York, over 97 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among data breach protection companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in New York, United States whose own description of what they do matches “data breach protection companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names data breach protection companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among data breach protection companies, and records with no verified work email. Companies headquartered outside New York are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 351 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names data breach protection companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many data breach protection companies are there based in New York, United States?

RevenueBase identified 97 data breach protection companies headquartered in New York, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

AGIO, headquartered in New York, tops this list with the largest team on record.

Which city has the most data breach protection companies?

New York leads with 97 headquartered companies, followed by Atlanta (64) and Austin (60).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 351 verified decision-maker contacts tracked across these 97 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 97 data breach protection companies based in New York, United States. Start with a free account, no credit card.

Download this list →

Related lists

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.